Question

what is the meaning of sea level?

Answer 1

the meaning of a sea level is the sea's surface, used in reckoning the height of geographic features such as hills and as a barometric standard.
Example: it's only 600 feet above sea level which also means above the surafce


hope this helps

Answer 2

the level of the sea's surface, used in reckoning the height of geographical features such as hills and as a barometric standard